4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 3-methyl-7-oxo-3-(1H-1,2,3-triazol-1-ylmethyl)-, diphenylmethyl ester, 4,4-dioxide, (2S,3S,5R)-

This compound is a pharmaceutical intermediate used in the synthesis of the beta-lactamase inhibitor tazobactam. It features a complex polycyclic structure containing triazole, amide, ester, and sulfone functional groups, with multiple stereocenters.